# hey guys, i follow you up to the point of intergrating the final line. How would I intergrate [x^-2.e^-x] dx thx

49,088 questions, page 370
1. ## Physics

A mortar shell is launched with a velocity of 100m/s at an angle of 30 degree above the horizontal from a point on a cliff 50m above a level plain below. How far from the base of the cliff does the mortar shell strike the ground?

asked by Mark on October 24, 2011
2. ## physics

The distance between two successive crests of a certain transverse wave is 1.13 m. 20 crests pass a given point along the direction of travel every 18.6 s. Calculate the wave speed. Answer in units of m/s. So far I have gotten 1.22 for my answer by 20/18.6

asked by kate on February 4, 2017
3. ## Phys ED

Apply your previously acquired knowledge of soccer and decide which position in basketball resembles the sweeper in soccer? A: Point guard B: Shooting guard C: Power Forward*** D: Small Forward

asked by Anonymous on November 1, 2016
4. ## science

three point electric charges q,2q,4q are placed at the three vertices of an equilateral triangle inscribed in a circle. find the net elect ric field at the centre of the triangle. answer : I think the answer is( 9×10^9 ×q√10)/r^2 ,where r is the radius

asked by shivansh on May 4, 2016
5. ## Trig.

An airplane flying at 600 miles per hour has a bearing of 52 degrees. After flying for 1.5 hours, how far north and how far east will the plane have traveled from point of departure? (I'm not sure how to convert miles into degrees or if that's even the

asked by Sam on December 21, 2009
6. ## Cousino

A small motor boat travels to a point five miles upstream and back again in a total time of 1 hour and 20 minutes. If the boat makes 8 miles per hour in still water, what was the velocity of the stream?

asked by Leesha on October 15, 2016
7. ## PHYSICS

An artillery shell is fired with an initial velocity of 300m/s at 55 degrees above horizontal. To clear an avalanche, it explodes on a mountainside 42.0s after firing. What are the x and y coordinates of the shell where it explodes, relative to its firing

asked by NICOLE on September 6, 2012
8. ## algebra

Abby Tanenbaum paddled her canoe 10 miles upstream, and then paddled back to her starting point. If the rate of the current was 3 mph,and the entire trip took 3.5 hours, what was Abby's rate (in still water)?

asked by Jennifer on April 23, 2013
9. ## Live Help

This may not be homework...but how do I go about using the live help for this site? At this point, live help is not available. Computer glitches, you know. So keep posting your questions on the message boards. Especially in the afternoons and evenings,

asked by Tezuka on September 19, 2006
10. ## physics

A charge q1 = 5 nC is located at the origin of xy copedinate system, and a charge of q2 = -2 nC is located on the y-axis at y =.30m. Find the components of the electric field and its magnitude and direction at a point P with coordinates (.40m, .30m).

asked by micah on March 9, 2016
11. ## Van de graaf question

A moving belt in a van de graaf generator transfers charge from one point to another. If the belt is 0.1 m. wide, moves with a velocity of 10 m/s and carries a surface charge of +10^-5 C/m^2, determine the current that this generator represents.

asked by Joyce on December 31, 2015
12. ## AP Chemistry

Each increase in pressure of 100 atm decreases the melting point of water by 1.0 degrees C. Estimate the temperature at which liquid water freezes under a pressure of 400 atm. How do I approach this problem?

asked by Thuy on October 27, 2010
13. ## geometry

Hi I really need help. I am extremley behind with some course homework for my summer courses. If someone got give the answers to the one's below, it would be greatly appreciated. Thank you so much. 1) Point G is the centroid AG = 18 AE =? 2)Given the

14. ## Language Arts

What fact does the author use to support her opinion about bleach? (1 point) 1. Bleach is a poison. 2. Bleach is an expensive part of processing water. 3. Bleach isn’t terrific to have around. __________________________________________ Note: This is not

asked by Student on February 28, 2013
15. ## Maths - Polar coordinates

The point (3, 2) is rotated 30 degrees about the origin. What are the polar coordinates of this after rotation? Am I right in saying it's (root13, 30)? The angle rotated and the radius calculated as root(3^2 + 2^2)? I can convert between polar and

asked by Hannelore on June 4, 2017
16. ## math

How would I write 2 inequalities that describe in basketball that 2 points = field goal and 1 point = free throw and I have scored at least 3 points in every game this season and 15 points for the most points in one game? Please Explain! I don't

asked by Katie on January 21, 2013
17. ## Chemistry

A 7.85 g sample of a compound with the empirical formula C5H4 is dissolved in 301 g of benzene. The freezing point of the solution is 1.05C below that of pure benzene. what are the molar mass and molecular formula of this compound?

asked by niki on October 1, 2013
18. ## science

An aeroplane has to go from a city A to another city B 500 km away in which B is north of A.The wind is blowing towards east at a speed of 20m/s.The air speed of aeroplane is 40 m/s.The direction in which the pilot should head the plane to reach the point

asked by GELSEY on April 28, 2017
19. ## physics

When the traffic light turns green, a scooter moves with constant acceleration of 2 ms–2. At same time, a car moving with constant speed of 10 m/s overtakes it. How far beyond the starting point, will the car overtake the scooter?

A basketball player throws the ball at a 38° angle above the horizontal to a hoop which is located a horizontal distance L = 5.6 m from the point of release and at a height h = 0.4 m above it. What is the required speed if the basketball is to reach the

asked by Julia on February 5, 2013
21. ## math

A right circular conical tank, point down, with top radius of R and height H is fully filled with a liquid whose weight-density, d, depends on its depth from its surface as d(z) = az + b, where a and b are constant. What is the weight of the liquid in the

asked by ibranian on August 8, 2012
22. ## math

In a circle with a radius of 5cm and is centered at point O, angle AOB intercepts arc AB. Arc AB has a length of 10cm. What is the degree measure of angle AOB? Round to the nearest hundredth.

asked by kathy on April 29, 2015
23. ## chem II

0.959 g of a hydrocarbon is dissolved in 10.00g of benzene. The freezing point of the solution is 1.16C. Find the molecular mass of the hydrocarbon. Benzene has a Kf of 5.12 and a freezing points of 5.53 degrees C. Not sure how to go about solving this

asked by Steph on February 8, 2015
24. ## Physics

The period of oscillation of a spring-and-mass system is 0.60 s and the amplitude is 4.1 cm. What is the magnitude of the acceleration at the point of maximum extension of the spring? I have too many unknowns to use the equation for frequency, period,

asked by Brenda on November 17, 2012
25. ## math

A runner and a walker depart from the same point going in opposite directions on a circular track that is 1 mile long. The runner travels at 9 mph and the walker at 3 mph. After how many minutes will they pass each other? I know the answer is 5 but I don't

asked by Morgan on November 5, 2015
26. ## precaculus

Convert the rectangular coordinate (2,-2) to polar form and find two additional representations of this point. Can you check my work and explain how to finish the question? r=√(2)2+(-2)2 r=2√2 tan theta = (-2)/2 theta = -1 polar coordinate= (2√2, -1)

asked by Anonymous on December 12, 2016
27. ## physics

A partical p is projected from a point on the surface of long smooth inclined plane. Simultaneously another particle Q is released on the smooth inclined plane from the same position. P and Q collide after t=4 sec. The speed of projection of p is:

asked by shubhi on August 20, 2014
28. ## Physics

A mass of 0.77 kg, hanging from a spring with a spring constant of 37 N/m, is set into an up-and-down simple harmonic motion. What is the speed of the mass when moving through the equilibrium point? The starting displacement from equilibrium is 0.2 m.

asked by Vanessa on July 4, 2012
29. ## calculus

Estimate the volume of the solid that lies below the surface z = xy and above the following rectangle. R = (x, y)|8 ≤ x ≤ 14, 4 ≤ y ≤ 8 Use a Riemann sum with m = 3, n = 2, and take the sample point to be the upper right corner of each square. (b)

asked by john on March 9, 2012
30. ## Chemistry

calculate the molar concentration of H3PO4 in the cola sample. Volume of decarbonated cola used 25.00mL, Molarity of NaOH used for titration 0.0100M, and Volume NaOH used at first equivalence point is 14.54mL.

asked by Anonymous on April 10, 2011
31. ## math

A runner and a walker depart from the same point going in opposite directions on a circular track that is 1 mile long. The runner travels at 9 mph and the walker at 3 mph. After how many minutes will they pass each other? I know the answer is 5 but I don't

asked by Morgan on November 5, 2015
32. ## trigonometry

A wheel with a 21-inch diameter is turning at the rate of 58 revolutions per minute. To the nearest inch, what is the velocity of a point on the rim in inches/minutes? 3879 inches/minutes is my answer correct??

asked by y912f on January 17, 2009
33. ## Org. Chem.

We did an experiment on the synthesis of n-butyl bromide using n-butyl alcohol and H2SO4. Why does the alkyl halide layer switch from the top layer to the bottom layer at the point where water is used to extract the organic layer? Please Help.

asked by CMM on November 30, 2009
34. ## physics

A basketball player is standing on the floor 10.0 m from the basket as in the figure below. The height of the basket is H = 3.05 m, and he shoots the ball at an angle, è = 42.8°, with the horizontal from a height of h = 2.04 m. (a) What is the

asked by Jessica on October 7, 2014
35. ## Chem9

An aqueous solution containing 35.1 grams of an unknown molecular (noneolectrolyte) compound in 152.5 grams of water was found to have a freezing point of -1.8 degrees C. Calculate the molar mass of the unknown compound.

asked by Ryan on May 2, 2011
36. ## Physics

A basketball player throws the ball at a 47degree angle above the horizontal to a hoop which is located a horizontal distance L = 8.4 m from the point of release and at a height h = 2.7 m above it. What is the required speed if the basketball is to reach

asked by Ido on September 18, 2015
37. ## CST GEOMETRY

a tree is situated on level ground from a point 135 feet from the base of the tree the measure of the angle of elevation from the ground to the top of the tree is 43 degrees which is the height of the tree to the nearest foot?

asked by carolina on March 25, 2013
38. ## Physics

A child pushes a merry go-round from rest to a final angular speed of 0.78 rev/s with constant angular acceleration. In doing so, the child pushes the merry-go-round 1.6 revolutions. What is the angular acceleration of the merry go-round? v=d/t .78rev/s =

asked by Joe on February 21, 2012

I did this java program. In this exercise, you will be writing a simple java program to explore the decision making mechanism using if/else and switch statements. The program is consists of one class (RentalCalculator). It will hold only one method, of

asked by Anonymous on February 4, 2019
40. ## Math 115 # 19

The following information shows a relationship between the speed of a certain car over a 100-mi test trip and the gas mileage obtained: Speed 40 45 50 55 60 gas millage 35 33 28 25 22 Use this information to make a line graph and then predict the gas

asked by Deb on January 9, 2009
41. ## Algebra 2 Need Help

1. function g(x)=-x^2-3x+7 . Find the area under the curve for the domain –4£ x £ 1. a 71.6 square units b. 46 square units c.35.83 square units d.17.916square units 2. y=2sin(circle with a line through it) a. How many cycles occur in the graph? b.

asked by Anonymous on August 5, 2012
42. ## physics

(a) What is the tangential acceleration of a bug on the rim of a 6.0 in. diameter disk if the disk moves from rest to an angular speed of 79 rev/min in 5.0 s? (b) When the disk is at its final speed, what is the tangential velocity of the bug? (c) One

asked by Kelsey on March 28, 2010
43. ## math

A piece of a broken wheel is shown. It was taken to a machine shop to be replaced with a new “whole” wheel. Find the radius of the wheel if AC=10cm, BD= 3cm, and D is the midpoint of AC. Round to the nearest hundredth. (note: keep in mind this

asked by Shelly on April 15, 2014
44. ## physics

A generating station is producing 1.2 x 106 W of power that is to be sent to a small town located 4.2 km away. Each of the two wires that comprise the transmission line has a resistance per length of 5.0 x 10-2/km. (a) Find the power lost in heating the

asked by shaknocka lewis on October 20, 2011
45. ## physics

A generating station is producing 1.3*10^6 W of power that is to be sent to a small town located 7.0 km away. Each of the two wires that comprise the transmission line has a resistance per kilometer of length of 5.0*10^-2 /km. (a) Find the power lost in

asked by rick on February 20, 2008
46. ## English

Describe and explain 5 rights and/or responsibilities of the worker with regards to safety in the workplace. This is the information I have: Worker's responsibilites: -Cooperate with the joint committee or worker health and safety representative,

asked by Anonymous on April 6, 2011
47. ## Workplace Hazards and Safety

Describe and explain 5 rights and/or responsibilities of the worker with regards to safety in the workplace. This is the information I have: Worker's responsibilites: -Cooperate with the joint committee or worker health and safety representative,

asked by Anonymous on April 6, 2011
48. ## english

im a bit confused of what could be the conclusion behind the following lines written by Melville in his LETTER TO NATHANIEL HAWTHORNE, JUNE 1851. the lines are: A: “So the product is a final hash, and all my books are botches.” is this mean that no one

asked by bindiya farswani on December 4, 2009
49. ## Fractions

Fiona and camila took a load of peaches to the farmers market. During the first hour , they sold 1/2 of the peaches plus 1/2 of a peach. In the second hour, they sold 1/3 of the remaining peaches plus 1/3 of a peach. In the third hour , they sold 1/4 of

asked by Natalie on October 26, 2014
50. ## Fractions Math

Fiona and camila took a load of peaches to the farmers market. During the first hour , they sold 1/2 of the peaches plus 1/2 of a peach. In the second hour, they sold 1/3 of the remaining peaches plus 1/3 of a peach. In the third hour , they sold 1/4 of

asked by Anonymous on October 26, 2014
51. ## Fractions

Fiona and camila took a load of peaches to the farmers market. During the first hour , they sold 1/2 of the peaches plus 1/2 of a peach. In the second hour, they sold 1/3 of the remaining peaches plus 1/3 of a peach. In the third hour , they sold 1/4 of

asked by Jessica on October 26, 2014
52. ## Math

Fiona and camila took a load of peaches to the farmers market. During the first hour , they sold 1/2 of the peaches plus 1/2 of a peach. In the second hour, they sold 1/3 of the remaining peaches plus 1/3 of a peach. In the third hour , they sold 1/4 of

asked by Jessica on October 26, 2014
53. ## Math

The per capita public debt (in thousands of dollars) of the United States for the years 1940 to 1990 appears below. Create a scatterplot and determine a trend line. Based on your scatterplot, what do you expect the per capita public debt to be in 2020?

asked by Andrew on November 10, 2008
54. ## English

I'm reading a book , and I don't understand this small phrase. Could you please tell me what it means, thanks. ~Or they'll be so horrified by my mother's newly-found 'lifestyle' that they'll slowly start ignoring me. In tenth grade—at least in Vienna,

asked by Sara on June 2, 2010
55. ## finance

Your firm is considering leasing a new radiographic device. The lease lasts for three years. The lease calls for four payments of \$25,000 per year with the first payment occurring immediately. The computer would cost \$140,000 to buy and would be

asked by Liesa on October 2, 2015
56. ## Marketing

Could you please check over my t/f questions? 1. Permission based methods allow customers to opt in or opt out to ensure that emails are sent to both current and prospective customers? TRUE 2. In the consumers mind, there is a fine line between legitimate

asked by Maggie on April 16, 2008
57. ## Accounting Theory

Instructions: The Company has one asset. The asset has a three-year life and two possible payoffs each year: 1) \$750 with a probability of 40%, and 2) \$100 with a probability of 60%. The company depreciates assets using the straight-line method. Assume the

asked by Matt on June 30, 2013
58. ## History

2) Niccolo Machiavelli was a Florentine who was active in politics in that Italian city-state, where bloodshed and destruction were often part of the political process. In chapter XIV, Machiavelli wrote “A Prince, therefore, ought never to allow his

asked by Olivia on March 11, 2011
59. ## Math

Assume that the Earth is spherical and recall that latitudes range from 0° at the Equator to 90° N at the North Pole. Consider Dubuque, Iowa (42.50° N latitude), and Guatemala City (14.62° N latitude). The two cities lie on approximately the same

asked by rachel on March 3, 2012
60. ## finance

onsider a four-year project with the following information: initial fixed asset investment = \$570,000; straight-line depreciation to zero over the four-year life; zero salvage value; price = \$30; variable costs = \$22; fixed costs = \$210,000; quantity sold

asked by jooji on October 20, 2015
61. ## physics

Assume that the Earth is spherical and recall that latitudes range from 0° at the Equator to 90° N at the North Pole. Consider Dubuque, Iowa (42.50° N latitude), and Guatemala City (14.62° N latitude). The two cities lie on approximately the same

asked by rachel on March 3, 2012
62. ## infinite discontinuity

How do check the graph of a function has an infinite discontinuity at a point or not? (without the help of a graphing calculator) example: Check whether y = (x^2-9)/(3x-9) has an infinite discontinuity at x = 3 or not CAn you get rid of the denominator?

asked by Jen on December 11, 2006
63. ## physics - electric field

a point particle with charge q= 4/5 uC is placed on the x-axis at x=-10cm. A second particle of charge Q is now placed on the x-axis at x = 25cm, and its found that the electric field at the origin is zero. Find Q.

asked by J Velji on January 17, 2011
64. ## STATISTICS

the percentage of adults who have at some point in their life been told that they have hypertension is 23.53%. If 8 adults are randomly selected, find the probability that between 2 and 4 of then inclusive have been told that they have hypertension

asked by amber on January 26, 2012
65. ## Math

Find the area of the given circle. Round to the nearest tenth. A circle with radius measuring 3 point 5 centimeters A. 22.0 cm² B. 38.5 cm² C. 11.0 cm² D. 42.8 cm²

asked by Anonymous on January 28, 2019
66. ## Pre Algebra

a wire is stretched from the top of a 26-foot pole to a point on the ground that is 15 feet from the bottom of the pole. Approximately how long is the wire in feet? 16 21 30 37

67. ## Math

a test 50 problems on it. for every correct answer, 2 points are given. for each incorrect answer, 1 point is subtracted. sue scored 85 points. how many problems did she miss?

asked by Anonymous on October 7, 2015
68. ## physics - electric field

a point particle with charge q= 4/5 uC is placed on the x-axis at x=-10cm. A second particle of charge Q is now placed on the x-axis at x = 25cm, and its found that the electric field at the origin is zero. Find Q.

asked by J Velji on January 17, 2011
69. ## chemistry

If this "point" for a particular titration occurs at pH x, a good indicator for for the titration would be indicator. Note: Provide only 1 indicator name (even if there are other indicators possible) and make sure the spelling is correct. X indicator 0.9

asked by help on April 23, 2010
70. ## Math

Jack has baseball practice every third and swimming practice every second day. During a month that has 30 days how many days will jack have both practices. I am a little stuck on this one. Can you point me in the right direction?

asked by Matt on September 11, 2016
71. ## Product MGT

At the grocery store, you buy a pack of 18 eggs and decide that when you get down to only 6 eggs you will buy another 18. In this scenario, what is your re order point? In this situation, what is your order quantity ?

asked by Alice on April 29, 2014
72. ## physics 1

A 7.2 kg diver stands at the end of a diving board 2.80 meters from its support. calculate the magnitude of the torque cause by the diver on the board the point of support.

asked by dominic on February 1, 2011
73. ## MATH

Ido not know how to do this. A jar contains 5 green erasers, 2 striped erasers, 4 pink erasers, and 3 white erasers. You select an eraser at random. What is P(not pink)? (1 point)

asked by Anonymous on May 28, 2014
74. ## Math

On a 20 question math test, your teacher gives you five points for every correct answer and takes away one point for each incorrect answer. If you score 70 on the test, how many did you get correct?

asked by Brian on June 19, 2016
75. ## Math

On a 20 question math test, your teacher gives you five points for every correct answer and takes away one point for each incorrect answer. If you score 70 on the test, how many did you get correct?

asked by Brian on June 19, 2016
76. ## Chemistry

The freezing point of a 5% solution of boric acid is -1.55 degrees Celsius.How many grams of boric acid should be used in preparing 500mL isotonic solution?

asked by Qin on October 14, 2018
77. ## Physics

Which way does the magnetic vector B point in the vicinity of the Earth's North Pole? A. Upward B Downward C. Horizontally D. THere is no magnetic field at the North Pole

asked by Jessica on October 30, 2010
78. ## physics

a ball moves up a hill with an initial velocity of 3m/s. four seconds later, it is moving down the hill at 9.0m/s. find the displacement of the ball from its initial point of release

asked by osama on November 12, 2011
79. ## Chemistry

Calculate the normal boiling point of a compound that has a vapor pressure of 19.30kPa at 167 Fahrenheit and a vapor pressure of 1.86kPa at 77 Fahrenheit.

asked by Annonymous on January 27, 2015
80. ## chemistry

what quantity of heat is required to vaporize 141 g of benzene at its boiling point 80.1 degrees celcius? heat of vaporization is 30.8 degrees celcius.

asked by Angela on January 20, 2011
81. ## AP Chem

What is the freezing point in degrees Celsius of a solution prepared by dissolving 11.3 (g) of calcium nitrate in 115 (g) of water? K of f for water is 1.86 degrees Celsius/m

asked by Anonymous on January 22, 2013
82. ## Math Calc

An object is moving along a circle of radius 5 . When the object is at the point (−4,3) , the y value of its position is changing at the rate of 9 units per second. How fast is the x value of its position changing at that moment?

asked by Ken on November 25, 2012
83. ## general science

a train goes forward at a speed of 1 m/s for 20 seconds. then it stops and goes backward at a speed of 0.5 m/s for 4 seconds. after both movements are completed, how far is the train located from its starting point.

asked by frank on February 7, 2012
84. ## Calculus

I have a graph of f(x) which I cant post here, but would like some help with concepts. lim f(x) = L x->a I already found the limit for different values of a. Now I need to find the value of f(a) at each point. So is f(a) = lim f(x) x->a So f(a) is just the

asked by George on July 7, 2015
85. ## Math HELP!!

Gina uses a magnifying glass to look at bugs. A caterpillar that is 2 inches long appears 4.5 inches long through the glass. What is the scale factor? (1 point) 2.25 ** 0.4 9 2.5

asked by lily stoner on November 3, 2016
86. ## physics

Use the data of this table to find the point between Earth and the Sun at which an object can be placed so that the net gravitational force exerted by Earth and Sun on this object is zero.

asked by monic on November 14, 2012
87. ## Calculus

f(x)= x/(1+x)^2 c) find the intervals of concavity and the inflection points. My answers: f is concave downward on (- infinity, 2) and concave upward on (2, infinity). Inflection point: ( 2, 2/9)

asked by Anonymous on December 31, 2014
88. ## Chem.

Ethanol has a heat of vaporization of 38.56 KJ/Mol. And a normal boiling point of 78.4 degrees celcius. WHAT is the vapor pressure of ethanol at 18 degrees celcius??

asked by Joseph on February 10, 2010
89. ## Physics

When heating water on a stove, a full pan of water takes longer to reach the boiling point than a pan that is half full. Why?

asked by Anonymous on December 1, 2013
90. ## biology

Regulation of an enzyme's activity occurs a) before the enzyme is produced b) during the production of the enzyme. c) when the enzyme already exists in the cell. d) at any point on the enzymatic production pathway. Thank you

asked by chris on February 20, 2012
91. ## college algebra

in an ellipse. Assume the distance from the listener to the talker is 180 ft. If the distance from the talker, to any point on the wall, to the listener is 240ft, then what is the width of the room?

asked by alexus on April 20, 2017
92. ## Trig

A 60 ft. antenna stands on top of a building, From a point on the ground, the angles of elevation to the top and bottom of the antenna measure 58 and 44 respectively. How tall is the building

asked by John on April 5, 2011
93. ## physics

a ball moves up a hill with an initial velocity of 3m/s. four seconds later, it is moving down the hill at 9.0m/s. find the displacement of the ball from its initial point of release

asked by osama on November 12, 2011
94. ## Physics

A gardener holds a hose 0.75 m above the ground such that water shoots out horizontally and hits the ground at a point 2 m away. What is the speed with which the water leaves the hose?

asked by Hababa on March 6, 2015
95. ## geometry

A snail is crawling along a meter stick. At a certain point the snail stops. The snail needs to crawl three times as far as it has already crawled in order to be 4 cm from the end. How far has the snail already crawled?

asked by Josh on July 12, 2010
96. ## calculus 12

7. ABC has vertices A(3,2,-5), B(4,-1,7) and C(-8,3,-6). a) Determine the area of ABC. b) Determine the coordinates of point D such that ABCD is a parallelogram. c) Is the parallelogram a rectangle? Justify your answer.

asked by samantha on May 28, 2013
97. ## physical science

two forces of 60 and 80 newton respectively act simultaneously at the point ...sketch and determine their resultant force using tail to tail method and tail to tail method

asked by kgahliso mahlaba on January 31, 2017
98. ## physics

a boy starts from point a and moves 5 units toward the east, then turns back and moves 3 units toward the west. What is the dispacement in the position of the boy?

asked by Anonymous on September 23, 2011
99. ## physics

Two spheres with charges of 4.00nC and 3.00nC are placed 0.500m apart. At what point between the two charges must the third charge of 2.00cN be placed so that the net electrostatic force acting on this charge is zero?

asked by Megan on April 5, 2012
100. ## physics

a boy starts from point a and moves 5 units toward the east, then turns back and moves 3 units toward the west. What is the dispacement in the position of the boy?

asked by Anonymous on September 23, 2011